Effects of land use on tree species diversity in different agro-ecological zones of Ghana
Miracle Obeng1, Reginald Tang Guuroh2, Mathias Becker1, Shyam Pariyar1
1University of Bonn, Inst. Crop Sci. and Res. Conserv. (INRES) - Plant Nutrition, Germany
The understanding of changes in plant species’ responses to the interactive effect of land use and climate is not only an important area of research, but could also inform on the effect of such interactions on the composition and structure of future plant biodiversity. We hypothesize that rainfall and land use affect the composition and diversity of tree species and soil fertility attributes. We investigated the effects of land use along an aridity gradient on the population structure and diversity of woody vegetation and on soil fertility attributes in Ghana. The study was performed in: i) the wet evergreen forest zone, ii) the moist semi deciduous forest zone and iii) the dry semi deciduous zone, following a gradient of increasing aridity. In each zone, we compared protected forest areas with the surrounding non-protected agriculturally used areas. Ten survey plots of 50 m × 20 m (0.1 ha) were randomly selected in each of the six site (60 observation plots in total). In each plot, composite soil samples from top soil (020 cm) were taken for physico-chemical analyses.
Keywords: Agriculture, climate change, diversification, ecosystem service, forestry, nutrient cycle, system shift
Contact Address: Miracle Obeng, University of Bonn, Inst. Crop Sci. and Res. Conserv. (INRES) - Plant Nutrition, 53115 Bonn, Germany, e-mail: s7miobenuni-bonn.de